Format a USB flash drive (ideally 8GB or smaller) to FAT32 .
Place the firmware file (often named Update.img or a specific .bin name) directly into the root directory of the USB drive. Do not put it in a folder. Download TCL L43D2930S Firmware part1 rar
A manual USB update typically performs a factory reset , erasing all user settings and apps. Format a USB flash drive (ideally 8GB or smaller) to FAT32